Lab project 3 human limb

The purpose of this project was to build a model of a working human limb. I chose an elbow joint with the corresponding bones, muscles, and ligaments. I began with dog bones one large and two small to represent the humerus, radius and ulna. I then used fusion modeling clay to represent both the joints as well as the ligaments. I then placed twizzlers pull-and-peel side by side to represent the long muscle fibers. I showed the limb in a straight position and then in a contracted position.

This is a picture of a cell body with an axon which carries action potentials to muscle fibers and makes them carry out specific functions.

This is a pictire of a sarcomere in its relaxed state.

This is a picture of a sarcomere in a contracted position.


This shows an axon at resting potential

this shows an axon when it is being charged with sodium

this shows an axon ending the action potential and polarization returning to resting state.